# Cannot find required key 'mappings'. Path: '/slots/place'

**URL:** <https://forum.rasa.com/t/cannot-find-required-key-mappings-path-slots-place/57731>\
**Category:** Rasa Open Source\
**Created:** [March 25, 2023, 8:21am UTC](https://forum.rasa.com/t/cannot-find-required-key-mappings-path-slots-place/57731 "2023-03-25T08:21:27Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![MESHEmugles](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/meshemugles/32/22665_2.png) [@MESHEmugles](https://forum.rasa.com/u/MESHEmugles)\
**Post date:** [March 25, 2023, 8:21am UTC](https://forum.rasa.com/t/cannot-find-required-key-mappings-path-slots-place/57731/1 "2023-03-25T08:21:27Z")

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> version: “3.1”
> 
> session\_config: session\_expiration\_time: 60 carry\_over\_slots\_to\_new\_session: true
> 
> intents:
> 
> - greet
> - goodbye
> - affirm
> - deny
> - mood\_great
> - mood\_unhappy
> - bot\_challenge
> - university\_hours
> - admission\_process
> - admission\_no
> - courses
> 
> entities:
> 
> - name
> - university slots: place: type: text influence\_conversation: true mapping:
> - type: from\_entity entity: university
> 
> person: type: text influence\_conversation: true mapping: - type: from\_entity entity: name

the error:

> YamlValidationException: Failed to validate ‘C:\schoolproject\universitybot\domain.yml’. Please make sure the file is correct and all mandatory parameters are specified. Here are the errors found during validation: in C:\schoolproject\universitybot\domain.yml:25: Cannot find required key ‘mappings’. Path: ‘/slots/place’ in C:\schoolproject\universitybot\domain.yml:32: Cannot find required key ‘mappings’. Path: ‘/slots/person’
> 
> (environ) C:\schoolproject\universitybot\>rasa train YamlValidationException: Failed to validate ‘C:\schoolproject\universitybot\domain.yml’. Please make sure the file is correct and all mandatory parameters are specified. Here are the errors found during validation: in C:\schoolproject\universitybot\domain.yml:25: Cannot find required key ‘mappings’. Path: ‘/slots/place’ in C:\schoolproject\universitybot\domain.yml:32: Cannot find required key ‘mappings’. Path: ‘/slots/person’

don’t know where i’m wrong… please help

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<div class="post-metadata">

**Author:** ![rasa\_learner](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/rasa_learner/32/21721_2.png) [@rasa\_learner](https://forum.rasa.com/u/rasa_learner)\
**Post date:** [March 25, 2023, 8:30am UTC](https://forum.rasa.com/t/cannot-find-required-key-mappings-path-slots-place/57731/2 "2023-03-25T08:30:19Z")

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Hi @MESHEmugles, it might be a syntax problem. You can validate your domain file here, [https://yamlchecker.com](https://yamlchecker.com).

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<div class="post-metadata">

**Author:** ![MESHEmugles](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/meshemugles/32/22665_2.png) [@MESHEmugles](https://forum.rasa.com/u/MESHEmugles)\
**Post date:** [March 25, 2023, 11:19am UTC](https://forum.rasa.com/t/cannot-find-required-key-mappings-path-slots-place/57731/3 "2023-03-25T11:19:43Z")

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it shows it is valid… but not working at my end

 ![proj](https://europe1.discourse-cdn.com/flex013/uploads/rasa/original/3X/d/0/d02c9002fb4c5a0e4b82313eef3083cbf4da1a54.jpeg)

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<div class="post-metadata">

**Author:** ![rasa\_learner](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.rasa.com/rasa_learner/32/21721_2.png) [@rasa\_learner](https://forum.rasa.com/u/rasa_learner)\
**Post date:** [March 25, 2023, 11:56am UTC](https://forum.rasa.com/t/cannot-find-required-key-mappings-path-slots-place/57731/4 "2023-03-25T11:56:45Z")

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you have a spelling error…change mapping to **mappings**